Description
GROCO 1/2" Combo Thru-Hull Fitting | Boat Supply Store
For applications requiring robust and versatile hull penetrations, this #316 stainless steel thru-hull fitting offers exceptional corrosion resistance. Its unique NPSM/NPT combination thread design facilitates connections with a wide array of plumbing components, essential for maintaining system integrity in saltwater environments. Rated UL 647B, this 1/2" fitting ensures compliance and safety for bilge pump discharges or raw water intakes on vessels operating in challenging conditions.
Key Features
- Versatile NPSM / NPT combination thread for broad compatibility.
- Durable #316 Stainless Steel construction resists marine corrosion.
- Reliable UL Listed 647B for assured quality and safety.
- Corrosion-Resistant #316 stainless steel ensures longevity.
- Comprehensive Sizing Available in sizes from 1/2" to 3".
- Marine Grade Engineered for harsh saltwater environments.
- Secure Fit Includes a nut for installation.
- Industry Approved Trusted GROCO brand quality.
Specifications
| Product Specifications | |
|---|---|
| Thread Type | NPSM / NPT Combo |
| Material | #316 Stainless Steel |
| Size | 1/2" |
| UL Listing | 647B |
| Available Sizes | 1/2" to 3" |
Who This Is For
Boat owners, marine mechanics, and DIYers undertaking plumbing projects on vessels requiring a reliable and durable thru-hull fitting with versatile thread compatibility. It is ideal for those upgrading or repairing marine plumbing systems where a robust, corrosion-resistant connection is paramount.
How It Compares
| Feature | GROCO 1/2" Combo Thru-Hull Fitting | Competitor |
|---|---|---|
| Thread Type | NPSM / NPT Combo | NPT |
| Material | #316 Stainless Steel | Bronze |
| Size | 1/2" | 1/2 inch |
| UL Listed | Yes (647B) | No |
Common Concerns Answered
Are these thru-hull fittings difficult to source for older boats?
While sourcing specific sizes or thread types for older boat models can sometimes be challenging, the NPSM/NPT combo thread on the GROCO TH-500-WS offers enhanced compatibility, potentially simplifying retrofitting.
Can overtightening damage this thru-hull fitting?
Like all marine fittings, overtightening the GROCO TH-500-WS can lead to damage. Proper installation techniques using appropriate sealants and torque values are essential for a secure, watertight seal without causing compromise.
Why choose stainless steel over bronze for thru-hull fittings?
While initial costs for #316 stainless steel may be higher than bronze, its superior corrosion resistance in harsh marine environments provides significantly longer-term durability and requires less maintenance, justifying the investment.
Frequently Asked Questions
What is the thread type of the GROCO TH-500-WS thru-hull fitting?
The GROCO TH-500-WS features a unique NPSM / NPT combination thread, offering versatility in connecting various plumbing components.
What material is the GROCO TH-500-WS thru-hull fitting made of?
This thru-hull fitting is constructed from premium #316 Stainless Steel, known for its exceptional corrosion resistance in marine environments.
What sizes are available for the GROCO thru-hull fittings?
The GROCO TH-500-WS and its related models are available in a range of sizes from 1/2" up to 3" to accommodate different plumbing requirements.
Is the GROCO TH-500-WS thru-hull fitting UL listed?
Yes, the GROCO TH-500-WS thru-hull fitting is UL Listed under certification 647B, indicating it meets stringent safety and quality standards.
What is the difference between NPSM and NPT threads?
NPSM (National Pipe Straight Mechanical) threads are straight and rely on a mechanical seal, often with a gasket, while NPT (National Pipe Taper) threads are tapered and create a seal through the wedging action of the threads. The combo thread on this fitting integrates both for broader application.
